| 岷江上游不同森林类型土壤有机碳含量及密度特征 |
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| 引用本文： | 冉华,黄从德.岷江上游不同森林类型土壤有机碳含量及密度特征[J].四川林业科技,2010,31(2):35-38. |
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| 作者姓名： | 冉华 黄从德 |
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| 作者单位： | 四川农业大学生态林业工程省级重点实验室,四川,雅安,625014 |
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| 摘 要： | 本文研究了岷江上游云杉人工林、紫果冷杉人工林、岷江冷杉人工幼龄林、高山栎天然次生林4种森林类型土壤有机碳含量及密度。结果表明:4种森林类型不同土层有机碳含量和有机碳密度均差异显著,都随土层深度增加而逐渐减小,且土壤有机碳集中分布在表层土(0~20 cm)中;4种森林类型土壤有机碳含量从高到低排序为:云杉人工林(5.896 g.kg-1)紫果冷杉人工林(5.479 g.kg-1)高山栎天然次生林(5.019 g.kg-1)岷江冷杉人工幼龄林(2.245 g.kg-1);土壤有机碳密度从高到低为:云杉人工林(0.03541 kg.m-2)高山栎天然次生林(0.03134 kg.m-2)紫果冷杉人工林(0.02474 kg.m-2)岷江冷杉人工幼龄林(0.01573 kg.m-2)。说明林分起源、树种组成、植物根系、地表枯落物和人类活动等因素影响着土壤有机碳含量及碳密度。
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| 关 键 词： | 森林类型 土壤有机碳含量 土壤有机碳密度 |
Characteristics of Soil Organic Carbon Content and Density Under Different Forest Types in the Upper Reaches of the Minjiang River |
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| RAN Hua,HUANG Cong-de.Characteristics of Soil Organic Carbon Content and Density Under Different Forest Types in the Upper Reaches of the Minjiang River[J].Journal of Sichuan Forestry Science and Technology,2010,31(2):35-38. |
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| Authors: | RAN Hua HUANG Cong-de |
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| Institution: | RAN Hua HUANG Cong-de(Sichuan Provincial Key Laboratory of Ecological Forestry Engineering,Sichuan Agricultural University,Ya\'an 625014,China) |
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| Abstract: | Soil organic carbon(SOC) content and density were studied under four kinds of forest types,including Picea asperata plantation,Abies recurrata plantation,young Abies faxoniana plantation and Quercus semicarpifolia forest at the upper reaches of the Minjiang River.The results showed that SOC content and density had significant differences among different soil layers under the four forest types,both SOC content and density gradually decreased with the increase of soil depth,and SOC was mainly distributed in t... |
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| Keywords: | Forest types Soil organic carbon content Soil organic carbon density |
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